Handle for illuminative diagnostic and surgical instruments.



R. H. WAPPLER. HANDLE FOR ILLUMINATIVE DIAGNOSTIC AND SURGICAL INSTRUMENTS.

APPLICATION FILED APELZII I915- Patented Nov. 30, 1915.

I/VI/E/VTOR BV W ATTORNEYS he lIr-v/////// V/l/AV/Im 3V LUMBIA PLANDGRAPH 60., WASHINGTON, D4 c V memes.-

. To all whom it may concern. Y

I sans 1 anmn onr wars-aria,

YORK, a. assisuca to AMERICAN crsa scom MAKERs, INC-W03 NEW YORK, 1v. o

" HANDLE For; IL ILUMI ATIVE DIAGNOSII'Ci AND suns-rent INSTRUMENTS.

Beit known that I, Brannon) H. WAP- rLnn, a citizen ofthe United Statesyand a resident of New York city, county and State of New York, have invented certain" new and useful Improvements in Handles for llluminative Diagnostic and Surgical Instruments, of whichthe following is a specification.

This invention relates to a novel handle more particularly adapted for, supporting instruments for diagnostic and surgical illumination of inner organs of a patient. The handle, includes novel means for regulating the current applied to the electric bulb and for preventing a premature burning out of the lamp, owing to the application of a current of excessive voltage.

The invention also contains other novel features of constructionas more fully brought out inthe appended specification and claims. r

In the accompanying drawing, Figure 1 is a side view of a handle embodying my invention, showing light tube attached thereto; Fig. 2 an enlarged longitudinal section through the handlewithflthe light tube partly broken away; Fig. .3. an enlargedside view of the upper portion of the handle with the barrel detached; and Fig. 4: a cross section on line H, Fig.2. p

My improved handle comprises essentially a barrel into one end ofwhichis tapped a conductive nipple r sleeve 11.

The latter is provided with astepped'axial bore 1.2 adapted for the reception of the cor respondinglv shaped lower end 13 of a plug 1 1 made of insulating material. The upper reduced end 15 of plug 14 is snuglv encompassed bya conductive socket 16iadapted for the reception of the foot 17 of a diagnostic lamp'tube or a similarilluminative instrument 1S, that'is held in position by a screw- 19. lntoplug His tightly fitted metallic tube 20 theupper endof which is frictionally engaged by the contact pin 21 of lamp 18. f

Intermediate sleeve 11 and socket 16 there is wound upon plug 14 a resistance coil or rheostat 22 one end of which is connected to socket 16 by a screw 23. Across the several windings of rheostat 22 is adapted to ride a contact spring24 received within a corresponding recessv of a slide 25 encompassing sleeve 11 Spring 24 is provided Application filed Ap a a1, 1515'. seriai No. 22,790.

Specificationof LettersEatent'; '12at m v 3o,1 15

- with an outwardly Ybent end 26 which en'- gages" av pertoration'27' of said slide so that.

the contact spring participates in themove v ment of the slide. B ackot a flange 28, socket 16 is provided with a split ring 29 that fric- The electric current is furnished'trom a suitable source (not shown) through a flexible twin corn 30 that passes through bar rel 1.0, the two conductors 31,32 ofsaid cord being respectively connected to tube 20 and 6O .tionally engages said socket and 'consti 'tutes an adjustable stop for the slide.

that the farther slide 25 is moved outward,

' the less resistance isinterpolated into the lamp circuit, therebyincreasing the brilliancy of the lamps r As my improved handleis designed to be used in conjunction with instruments of different character requiring a different illuminative power, which inturn determines the electric current necessary for the lamp, it is obvious that the filaments of relatively small lamps may be readily over-loaded if the full current is applied thereto. In order to overcome this ditliculty the stop 29 is provided which imits the outward'movementof slide 25. This stop is soset that when ever the slide is shifted outward until its movement is checkedby said stop, a pre.-' determined part of the 'rheostat remains interpolated in the lamp circuit thus pre-' venting a premature burning out' of the. 1

lamp. 7 r Ifcl'aim p 1. Ahandle of the character described,

I comprising a barrel, a conductive sleeve mounted therein, an insulated plug mounted inthe "sleeve, a conductive socket encompassing one end'ot the plug, an illuminative instrument having a conductive foot that is received within the socket, a resistance coil encompassing the plug, and connected at one of its ends to thesocket, a slide movable along the sleeve, a contact passing one end of the plug, tive instrument having a 7 that is, rece vedvvlth n the socket, a contact ,for the slide, and a source of electricity metallicallv connected at its poles to theilamp and to the sleeve respectively.

'2. A handle of the character described,

comprising a barrel, a conductive sleeve mountedtherein, an insulated plug mounted in the. sleeve. a conductive socket enconi-. an illuminaconductive foot pin on said instrument, a metallic tube fitted Within the plug and adapted to receive the pin, a resistance coil encompassing the plug and connected at one of its ends to the socket, a slide movable along the sleeve, a contact spring. on the slide thatis adapted to engage the resistance coil, an adjustable stop for theslide, and a source of electricity connected at its poles tothe tube and to the sleeve respectively.

7 REINHOLD WAPPLER.

Copies of :liis'pats nt may be obtained for five cents each, by addressing the Commissioner of Patents,

' WashingtomD. G. 

